JPS5466609A - Inhibition of dimerization of methacrolein - Google Patents
Inhibition of dimerization of methacroleinInfo
- Publication number
- JPS5466609A JPS5466609A JP13184777A JP13184777A JPS5466609A JP S5466609 A JPS5466609 A JP S5466609A JP 13184777 A JP13184777 A JP 13184777A JP 13184777 A JP13184777 A JP 13184777A JP S5466609 A JPS5466609 A JP S5466609A
- Authority
- JP
- Japan
- Prior art keywords
- methacrolein
- dimerization
- esp
- hydroquinone
- dimer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To store high purity methacrolein, useful as an intermediate for the synthesis of methacrylic acid, stably, for a long period, by keeping the methacrolein at a low temp. thereby suppressing the dimerization thereof.
CONSTITUTION: Methacrolein, esp. high purity methacrolein is maintained at ≤10°C, esp. ≤5°C to inhibit its dimerization and to improve its stability. The addition of a generally used polymerization inhibitor, e.g. hydroquinone, has no effect for inhibiting the dimerzation, howerver, it is preferable to add an inhibitor in order to suppress the polymerization. For example, 1000ppm of hydroquinone is added to methacrolein and the mixture is maintained at 20°C, 10°C, 5°C, or -20°C; and the dimer comcentration is increased more than 3 times after a day at 20°C, the dimerization is inhibited at 10°C and 5°C, and the concentration of the dimer scarcely changes at -20°C even after standing for 60 days.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13184777A JPS5466609A (en) | 1977-11-02 | 1977-11-02 | Inhibition of dimerization of methacrolein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13184777A JPS5466609A (en) | 1977-11-02 | 1977-11-02 | Inhibition of dimerization of methacrolein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5466609A true JPS5466609A (en) | 1979-05-29 |
Family
ID=15067489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13184777A Pending JPS5466609A (en) | 1977-11-02 | 1977-11-02 | Inhibition of dimerization of methacrolein |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5466609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017529359A (en) * | 2014-09-18 | 2017-10-05 | エボニック レーム ゲゼルシャフト ミット ベシュレンクテル ハフツングＥｖｏｎｉｋ Ｒｏｅｈｍ ＧｍｂＨ | Optimized method for producing methacrolein |
| US20230227394A1 (en) * | 2020-07-30 | 2023-07-20 | Röhm Gmbh | Process for minimising the loss of activity in reaction steps carried out in circulation |
-
1977
- 1977-11-02 JP JP13184777A patent/JPS5466609A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017529359A (en) * | 2014-09-18 | 2017-10-05 | エボニック レーム ゲゼルシャフト ミット ベシュレンクテル ハフツングＥｖｏｎｉｋ Ｒｏｅｈｍ ＧｍｂＨ | Optimized method for producing methacrolein |
| US20230227394A1 (en) * | 2020-07-30 | 2023-07-20 | Röhm Gmbh | Process for minimising the loss of activity in reaction steps carried out in circulation |
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